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A 1500 kg car moving on a flat, horizontal road negotiates a curve. If the radius of the curve is 35m and the coefficient of static friction between the tires and dry pavements is 0.523, find the maximum speed the car can have and still make the turn successfully
q1. over a 30-day period a power plant generates an average of 751 mw of electrical power and 1225 mw of waste heat and
A chick farmer decides to increase the size of her flock from500 chickens to 2000 chickens. estimate how much louder will the sound be
An insulated Thermos contains 123 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool coffee. By how various degrees has your coffee cooled one time the ice has melted and equilibrium is reached? Treat the coffee as tho..
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
q1. a spring with spring constant 14 hangs from the ceiling. a ball is attached to the spring and allowed to come to
If the coefficient of static frictionbetween the bureau and the floor is 0.45, what is the minimum horizontal force a person must apply to start the bureau moving
q1. a rotating flywheel that is brought up at its maximum speed 3000 rpm stores how much energy? the flywheel is a
A single slit has aperture width 4.54 μm and lies 14.9 cm from a screen. If light of wavelength 420 nm falls on the slit, find the width of the central maximum in centimeters
a 0.45 kg croquet ball is initially at rest on the grass. when the ball is struck by a mallet, how long was the mallet in contact with the ball
The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
Assume that you are given the choice among two life preservers that are identical in size, the first a light one filled with Styrofoam and the second a very heavy one filled with gravel. If you submerge these life preservers in the water, upon which ..
A golf ball is dropped from rest from a height of 9.90 m. It hits the pavement, then bounces back up, rising just 5.30 m before falling back down again. A boy then catches the ball when it is 1.16 m above the pavement. Ignoring air resistance, comput..
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